“Your spoil will be harvested.” The Assyrians had taken great spoil from the peoples they conquered. Now God tells them that there is a day coming when the spoil they have taken will be taken from them. It will be “harvested” (the Hebrew is more literally “gathered,” but it refers to being gathered in harvest) as if locusts had come and taken their spoil. People will leap upon it (or “rush to and fro on it”) like locusts. The two words for “locust” in the verse are different, but refer to different stages in the growth of the locust. So the REV uses “young locust” (which some versions translate as “caterpillar”) and “locust.”